If you go to your profile settings, you will see the field "Nano Address". This field will allow you to fill in a public nano address that follows the standard format (nano_[60 alphanumeric characters]).
The current behavior is the following: If a profile has an associated nano address, an XNO button appears in their profile, next to their comments, and next to their name in post listings. Clicking on that button will open a new tab to nano.to/nano_address
, which provides you with the address and a QR code to send a tip to that address.
If you visited nano.garden before this change, it may be necessary to delete the site's saved history/cache for the changes to be visible.
The code changes can be pulled from github and compared to the 0.18.3 tag: lemmy-ui, lemmy